#head{
    background-color: lightgreen;text-align: center;height: 20px;
}
#head div{
    width: 1200px;height: 20px;margin: auto;
}
#middle{
    background-color: #3c763d;text-align: center
}
#banner{
    height:350px;width: 100%;
}
#pro-middle{
    width: 1200px;margin: auto;
}
#pro-middle div{
    width: 100%;height: 150px;
}
#pro-middle ul {
    list-style:none;margin: 0px;padding: 0px;width: auto; width: 100%;
}
#pro-middle ul li{
    height: 500px;
}
#geline{
    width: 100%;height: 100px;background-color: #dff0d8;
}
#bottom{
    text-align: center;height: 200px;background-color: #8a6d3b;
}